BlockCipherXTEA.h
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00001 /***************************************************************************** 00002 * Copyright (C) 2011 by Benjamin Hadorn (b_hadorn@bluewin.ch) 00003 ***************************************************************************** 00004 * Project : Zeus Base Library 00005 * Module : BlockCipherXTEA 00006 * Package : Zeus.ZeusBase.Security 00007 * Author : Benjamin Hadorn 00008 * Date : 27.12.2011 00009 * System : Zeus-Framework 00010 ***************************************************************************** 00011 * Licence: * 00012 * This library is free software; you can redistribute it and/or modify * 00013 * it under the terms of the GNU Lesser General Public License as * 00014 * published by the Free Software Foundation; either version * 00015 * 2.1 of the License, or (at your option) any later version. * 00016 * * 00017 * This library is distributed in the hope that it will be useful, * 00018 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00019 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00020 * GNU Lesser General Public License for more details. * 00021 * * 00022 * You should have received a copy of the GNU Lesser General Public * 00023 * License along with this library; if not, write to the Free Software * 00024 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA * 00025 *****************************************************************************/ 00026 00027 /***************************************************************************** 00028 * Changes: 00029 * 27.12.2011 bha: created zeus 2.0 00030 *****************************************************************************/ 00031 00032 #ifndef BlockCipherXTEAH 00033 #define BlockCipherXTEAH 00034 00035 #include <zeusbase/Security/AbstractCrypter.h> 00036 #include <zeusbase/System/ByteArray.hpp> 00037 00038 BEGIN_NAMESPACE_Zeus 00039 00040 /***************************************************************************/ 00044 /***************************************************************************/ 00045 class TBlockCipherXTEA : public TAbstractCrypter 00046 { 00047 public: 00048 TBlockCipherXTEA(); 00049 00050 //abstract methods 00051 virtual Retval encode(const IByteArray& rInput, IByteArray& rOutput); 00052 virtual Retval decode(const IByteArray& rInput, IByteArray& rOutput); 00053 virtual Int getBlockSizeForDecoding() const; 00054 virtual Int getBlockSizeForEncoding() const; 00055 virtual void setKey(Uint64 uldKey); 00056 virtual void setKey(const IByteArray& rKey); 00057 00058 protected: 00059 virtual ~TBlockCipherXTEA(); 00060 00061 private: 00063 Uint32 m_ulKey[4]; 00064 TByteArray m_aKey; 00065 00066 static void encode_internal(Uint uiRounds, Uint32* v, Uint32* k); 00067 static void decode_internal(Uint uiRounds, Uint32* v, Uint32* k); 00068 }; 00069 00070 /***************************************************************************/ 00073 /***************************************************************************/ 00074 inline Int TBlockCipherXTEA::getBlockSizeForDecoding() const 00075 { 00076 return 8; //64bit 00077 } 00078 00079 /***************************************************************************/ 00082 /***************************************************************************/ 00083 inline Int TBlockCipherXTEA::getBlockSizeForEncoding() const 00084 { 00085 return 8; //64bit 00086 } 00087 00088 END_NAMESPACE_Zeus 00089 //--------------------------------------------------------------------------- 00090 #endif